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# fullScreenMinHeight

The visual minimum height of an accessory view that displays below the title bar when the window is in full screen mode.

```
var fullScreenMinHeight: CGFloat { get set }
```

## Discussion

The [`fullScreenMinHeight`](/documentation/AppKit/NSTitlebarAccessoryViewController/fullScreenMinHeight) property applies only to an `NSTitlebarAccessoryViewController` object in which [`layoutAttribute`](/documentation/AppKit/NSTitlebarAccessoryViewController/layoutAttribute) is set to <doc://com.apple.documentation/documentation/UIKit/NSLayoutConstraint/Attribute/bottom>. The minimum height you set determines how much of your accessory view is visible when the menu bar is hidden during full screen mode. By default, the minimum height is `0`, which means that the accessory view is hidden when the menu bar is hidden. When a user reveals the menu bar in this scenario, the accessory view is also revealed.

To persistently show a portion of the accessory view, set this property to a value greater than `0`. For example, if you have a fixed height accessory view, you can set [`fullScreenMinHeight`](/documentation/AppKit/NSTitlebarAccessoryViewController/fullScreenMinHeight) to `view.frame.size.height` to show the view regardless of whether the menu bar is hidden. Note that the view’s height is never actually changed when it is hidden or revealed; instead, it is automatically clipped by an internal clip view.

---

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